Description
Oral cavity deep, opening ventrally away (from apex, more internal tubular part precedes cytostome; somatic ciliation, dense; striated band on right surface arising near right margin of oral cavity ; many long mucocyst-like extrusomes in body cortex; four genera . b y <9 t;? 1. Tubular part of oral cavity extending to left .... ..... ...... ..... ...... .... ..... ... ..... ..... Plagio 1'. Long axis of tubular part of oral cavity in plane of long axis of body .. ...... ..... ..... ... .. ........ 2 2. Tubular part of oral cavity curving anteriorly , then posteriorly ; endocommensal in gut of echinoids .. ...... ... ........... Lechriopyla 2'. Tubular part of oral cavity extending directly backward from outer oral cavity .. .... .... .. ......... ...... .... Pseudoplagiopyla
Type species
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Raw text
Oral cavity deep, opening ventrally away (from apex, more internal tubular part precedes cytostome; somatic ciliation, dense; striated band on right surface arising near right margin of oral cavity ; many long mucocyst-like extrusomes in body cortex; four genera . b y <9 t;? 1. Tubular part of oral cavity extending to left .... ..... ...... ..... ...... .... ..... ... ..... ..... Plagio 1'. Long axis of tubular part of oral cavity in plane of long axis of body .. ...... ..... ..... ... .. ........ 2 2. Tubular part of oral cavity curving anteriorly , then posteriorly ; endocommensal in gut of echinoids .. ...... ... ........... Lechriopyla 2'. Tubular part of oral cavity extending directly backward from outer oral cavity .. .... .... .. ......... ...... .... Pseudoplagiopyla